Unit sales for new product ABC have varied in the first seven months of this year as follows:

Month	Jan	Feb	Mar	Apr	May	Jun	Jul
Unit Sales	145	492	319	265	389	321	180

What is the (sample) skewness of the data?

Please round your answer to the nearest hundredth.

Note that the correct answer will be evaluated based on the full-precision result you would obtain using Excel.